fix $this->db->escape_str()

application/models/information_model.php

@@ -795,7 +795,7 @@ class Information_model extends CI_Model
     $this->init();
     $keysql = '';
     foreach ($keywords as $key) {
-      $safeStr = $this->db->escape_str($key);
+      $safeStr = $this->HT->escape_str($key);
       $keysql .= ' OR ic_content like \'%' . $safeStr . '%\'';
       $keysql .= ' OR ic_url like \'%' . $safeStr . '%\'';
       $keysql .= ' OR ic_photo like \'%' . $safeStr . '%\'';